Patents by Inventor Ryuta KINOSHITA
Ryuta KINOSHITA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20240006941Abstract: A rotor for a rotary electric machine includes: a rotor core; a shaft that is hollow and that supports the rotor; and an end plate that is disposed on an end of the rotor in a rotational axis direction, and that forms a passage through which a refrigerant flows, between the end plate and the rotor core, in which the end plate includes a plurality of ribs that come into contact with the shaft, the passage includes a refrigerant entry portion that is provided between the plurality of ribs, and a refrigerant exit portion that communicatively connects the refrigerant entry portion to an outer peripheral surface of the end plate, the shaft has a refrigerant supply hole communicatively connecting the refrigerant entry portion to internal of the shaft, and a circumferential length of the refrigerant entry portion along an innermost diameter is larger than a circumferential length of the refrigerant supply hole.Type: ApplicationFiled: August 31, 2021Publication date: January 4, 2024Applicant: HITACHI ASTEMO, LTD.Inventors: Zhi JING, Shinji YAMAZAKI, Hiromitsu OKAMOTO, Akira FUJIWARA, Ryuta KINOSHITA, Hiroki NARUSHIMA, Keiichiro MARUYAMA
-
Patent number: 11040727Abstract: In an engine speed display control device of a vehicle including an engine speed display to display a determined display value of the engine speed, the engine speed display control device determines the display value of the engine speed, and includes a variation restricting display control portion configured to implement a variation restricting display control when a garage-parking shifting operation of the transmission shifting member is performed while the vehicle is held stationary in a non-operated position of the accelerator pedal. The variation restricting display control portion determines the display value of the engine speed in the variation restricting display control such that an amount of variation of the display value is smaller than in a normal display control in which the display value is determined according to the actual value.Type: GrantFiled: May 20, 2019Date of Patent: June 22, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takanori Shirakawa, Chikashi Ohta, Ryuta Kinoshita
-
Patent number: 10794348Abstract: A fuel injection valve includes: a valve seat member to which the valve seat is formed; a welding portion between the valve seat member and the cylindrical member, which is provided on the base end side of the stepped surface, the valve seat member being assembled to be press-fit in the cylindrical member so that a tip end side abutment pressure between an inner circumference surface of the cylindrical member, and a tip end side outer circumference surface portion of the valve seat member which is on the tip end side of the stepped surface is smaller than a base end side abutment pressure between the inner circumference surface of the cylindrical member, and a base end side outer circumference surface portion of the valve seat member which is on the base end side of the stepped surface portion.Type: GrantFiled: August 9, 2017Date of Patent: October 6, 2020Assignee: Hitachi Automotive Systems, Ltd.Inventors: Takahiro Saito, Ryuta Kinoshita, Nobuaki Kobayashi
-
Patent number: 10662914Abstract: Disclosed is a fuel injection valve comprising: a fuel injection orifice provided in a downstream side of a valve seat which a valve body moves toward and away from; a swirl chamber having a swirl passage formed around the entry opening of the fuel injection orifice; and a transverse passage whose end is opened in an inner circumferential wall of the swirl chamber in order to provide a fuel into the swirl chamber, wherein a center of the entry opening is shifted from a first position where the velocity component in the swirl direction of the fuel can be maximized to a second position where the velocity component in the swirl direction is reduced, and where a velocity component in a center axis direction of the fuel injection orifice is enhanced. Thereby, it is possible to easily adjust a fuel injection amount and a spray angle.Type: GrantFiled: February 5, 2016Date of Patent: May 26, 2020Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Masaki Nagaoka, Nobuaki Kobayashi, Ryuta Kinoshita
-
Publication number: 20190351917Abstract: In an engine speed display control device of a vehicle including an engine speed display to display a determined display value of the engine speed, the engine speed display control device determines the display value of the engine speed, and includes a variation restricting display control portion configured to implement a variation restricting display control when a garage-parking shifting operation of the transmission shifting member is performed while the vehicle is held stationary in a non-operated position of the accelerator pedal. The variation restricting display control portion determines the display value of the engine speed in the variation restricting display control such that an amount of variation of the display value is smaller than in a normal display control in which the display value is determined according to the actual value.Type: ApplicationFiled: May 20, 2019Publication date: November 21, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takanori SHIRAKAWA, Chikashi OHTA, Ryuta KINOSHITA
-
Publication number: 20190257277Abstract: A fuel injection valve includes: a valve seat member to which the valve seat is formed; a welding portion between the valve seat member and the cylindrical member, which is provided on the base end side of the stepped surface, the valve seat member being assembled to be press-fit in the cylindrical member so that a tip end side abutment pressure between an inner circumference surface of the cylindrical member, and a tip end side outer circumference surface portion of the valve seat member which is on the tip end side of the stepped surface is smaller than a base end side abutment pressure between the inner circumference surface of the cylindrical member, and a base end side outer circumference surface portion of the valve seat member which is on the base end side of the stepped surface portion.Type: ApplicationFiled: August 9, 2017Publication date: August 22, 2019Applicant: Hitachi Automotive Systems, Ltd.Inventors: Takahiro SAITO, Ryuta KINOSHITA, Nobuaki KOBAYASHI
-
Publication number: 20180066620Abstract: Disclosed is a fuel injection valve comprising: a fuel injection orifice provided in a downstream side of a valve seat which a valve body moves toward and away from; a swirl chamber having a swirl passage formed around the entry opening of the fuel injection orifice; and a transverse passage whose end is opened in an inner circumferential wall of the swirl chamber in order to provide a fuel into the swirl chamber, wherein a center of the entry opening is shifted from a first position where the velocity component in the swirl direction of the fuel can be maximized to a second position where the velocity component in the swirl direction is reduced, and where a velocity component in a center axis direction of the fuel injection orifice is enhanced. Thereby, it is possible to easily adjust a fuel injection amount and a spray angle.Type: ApplicationFiled: February 5, 2016Publication date: March 8, 2018Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Masaki NAGAOKA, Nobuaki KOBAYASHI, Ryuta KINOSHITA